"The 1984 Nemo Pilot film is a masterpiece of animation, of action, and of movement, it represents everything that defines anime. There's probably only a handful of films or television shows that deserve to sit on that mantle. The Little Nemo film project was extremely ambitious, a joint effort between the top animators from Japan and America. Production began in 1982, and a number of big names were courted, including Ray Bradbury, Gary Kurtz, Hayao Miyazaki, Osamu Dezaki, and Isao Takahata. Unfortunately, production was stalled as people walked away. Miyazaki, for instance, didn't want to make a movie in which everything was a dream, and Takahata wanted to tell a story about Nemo's growth into adulthood (much like Anne of Green Gables and Omohide Poro Poro). Fortunately, in December of 1984, after six months of work, the first pilot appeared. Created by Yoshifumi Kondo (director), Kazuhide Tomonaga (animation director/e-konte/key animator), Nobuo Tomizawa (key animation), Kyoto Tanaka (key animation), and Nizo Yamamoto (art director). The pilot is essentially an extended chase sequence through a surrealist landscape of buildings and skyscrapers and waterfalls, drawn in full animation and shot in 70mm…"

Critically acclaimed as one of the best films of the year, this seductive, award-winning triumph captivated moviegoers the world over. It's the compelling tale of two lifelong friends unexpectedly caught in a passionate love triangle with the woman who comes between them! Academy Award®-nominated, FAREWELL MY CONCUBINE earned the Golden Globe as Best Foreign Film in addition to claiming Best Picture honors at the prestigious Cannes Film Festival! Packed with vivid, provocative imagery throughout, this sensual story of love and betrayal is the hot and exotic must-see movie of the year!

Follow up from Shakugan no Shana Movie, what we have here is a movie of just under six minutes with the chibi Shana-tan as the star. I gather these were pretty popular with the release of the first TV series of Shakugan no Shana that it was only natural that one would be done for the movie.